Gnomish engineering bug

Hello

Please , could you help me with the mission to obtain gnomish engineering , currently, I can't take the mission , I'm 427 lvl in engineering , I created a report in the bug tracker, and tickets in game (6), but the answer is the same, "Please wait until it is fixed by developwers", I found reports in the bug tracker of the last year without solution, so, someone know another way to solve this problem, will be appreciated any sugestion.